Issue
I would like to create a fragment of a dropdown in this case, and would like to make it, so other custom objects can use it. It should make more sense in code form:
Dropdown Fragment:
<body th:fragment="dropdownSearch(field)">
<div class="select is-normal">
<input list="browsers" name="browser" th:field="*{field}">
<datalist id="browsers">
<option th:each="i : ${#numbers.sequence(0, __${valuesDataIndexSize - 1}__)}"
th:value="${i}" th:text="${i} + ' - Kommentar'"></option>
</datalist>
</div>
</body>
Fragment call example
<div th:replace="fragments/dropdown.html :: dropdownSearch(field=*{projectOptions.zMatrixIndex})"></div>
The goal here is to make the th:field in the dropdown fragment dynamic so as seen in the fragment call example, it can be set to be custom, which in this case should be projectOptions.zMatrixIndex. So if I call the fragment and tell it, that field should be test, it should set the th:field in the fragment to th:field="*{test}".
If I execute the code as it is now, I receive this error:
2022-09-22 15:57:39.818 ERROR 5516 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]
: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception
[Request processing failed; nested exception is
org.thymeleaf.exceptions.TemplateProcessingException: Error during execution of processor
'org.thymeleaf.spring5.processor.SpringInputGeneralFieldTagProcessor' (template:
"fragments/dropdown.html" - line 8, col 41)] with root cause
org.springframework.beans.NotReadablePropertyException: Invalid property 'field' of bean class
[com.tribus.tribusspring.entities.objects.project.main.ProjectData]: Bean property 'field' is
not readable or has an invalid getter method: Does the return type of the getter match the
parameter type of the setter?
Thank you for any help!
Solution
You can't pass references to objects when using th:field instead, you have to pass the string name of the object and then use preprocessing. Like this:
<div th:replace="fragments/dropdown.html :: dropdownSearch(field='projectOptions.zMatrixIndex')"></div>
and then
<input list="browsers" name="browser" th:field="*{__${field}__}">
(it's just how th:field works.)
Answered By - Metroids
Answer Checked By - Marilyn (JavaFixing Volunteer)
